From: Deepak Gupta <debug@rivosinc.com>
To: Mark Brown <broonie@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
Andrew Morton <akpm@linux-foundation.org>,
"Liam R. Howlett" <Liam.Howlett@oracle.com>,
Vlastimil Babka <vbabka@suse.cz>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
Arnd Bergmann <arnd@arndb.de>,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-mm@kvack.org, linux-arch@vger.kernel.org,
Rick Edgecombe <rick.p.edgecombe@intel.com>
Subject: Re: [PATCH RFC/RFT 2/3] mm: helper `is_shadow_stack_vma` to check shadow stack vma
Date: Fri, 11 Oct 2024 10:08:20 -0700 [thread overview]
Message-ID: <ZwlbhKL7aZf+L9qa@debug.ba.rivosinc.com> (raw)
In-Reply-To: <ZwkAO9P3CxGbyq4L@finisterre.sirena.org.uk>
On Fri, Oct 11, 2024 at 11:38:51AM +0100, Mark Brown wrote:
>On Thu, Oct 10, 2024 at 05:32:04PM -0700, Deepak Gupta wrote:
>> VM_SHADOW_STACK (alias to VM_HIGH_ARCH_5) is used to encode shadow stack
>> VMA on three architectures (x86 shadow stack, arm GCS and RISC-V shadow
>> stack). In case architecture doesn't implement shadow stack, it's VM_NONE
>> Introducing a helper `is_shadow_stack_vma` to determine shadow stack vma
>> or not.
>>
>> Signed-off-by: Deepak Gupta <debug@rivosinc.com>
>> ---
>> mm/gup.c | 2 +-
>> mm/vma.h | 10 +++++++---
>> 2 files changed, 8 insertions(+), 4 deletions(-)
>
>As I noted in reply to the version of this patch in the RISC-V series
>there's another test for VM_SHADOW_STACK in mm/mmap.c.
Yeah will make sure to consolidate comments from both patch series in next
version. Thanks.
next prev parent reply other threads:[~2024-10-11 17:08 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-11 0:32 [PATCH RFC/RFT 0/3] Converge common flows for cpu assisted shadow stack Deepak Gupta
2024-10-11 0:32 ` [PATCH RFC/RFT 1/3] mm: Introduce ARCH_HAS_USER_SHADOW_STACK Deepak Gupta
2024-10-11 10:33 ` Mark Brown
2024-10-11 17:08 ` Deepak Gupta
2024-10-11 0:32 ` [PATCH RFC/RFT 2/3] mm: helper `is_shadow_stack_vma` to check shadow stack vma Deepak Gupta
2024-10-11 10:38 ` Mark Brown
2024-10-11 17:08 ` Deepak Gupta [this message]
2024-10-11 0:32 ` [PATCH RFC/RFT 3/3] kernel: converge common shadow stack flow agnostic to arch Deepak Gupta
2024-10-11 12:33 ` Mark Brown
2024-10-11 17:05 ` Deepak Gupta
2024-10-12 8:49 ` Mark Brown
2024-10-14 14:48 ` kernel test robot
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